320213323331 has 24 divisors (see below), whose sum is σ = 371185929216. Its totient is φ = 273901704320.

The previous prime is 320213323307. The next prime is 320213323393. The reversal of 320213323331 is 133323312023.

It is a happy number.

It is not a de Polignac number, because 320213323331 - 2³⁰ = 319139581507 is a prime.

It is a super-2 number, since 2×320213323331² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 320213323331.

It is not an unprimeable number, because it can be changed into a prime (320213323231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13107530 + ... + 13131936.

It is an arithmetic number, because the mean of its divisors is an integer number (15466080384).

Almost surely, 2^320213323331 is an apocalyptic number.

320213323331 is a deficient number, since it is larger than the sum of its proper divisors (50972605885).

320213323331 is a wasteful number, since it uses less digits than its factorization.

320213323331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28579 (or 28562 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 26.

Adding to 320213323331 its reverse (133323312023), we get a palindrome (453536635354).

The spelling of 320213323331 in words is "three hundred twenty billion, two hundred thirteen million, three hundred twenty-three thousand, three hundred thirty-one".